Carbureter.



PATENTED FEB. 19, 1907.

4C. SMITH. GARBURBTER.

APPLIOATION FILED 0OT.15. 1906.

Speciceton of Letters Pete-nt.

Application lled October l5,1906. Serial No. 338,987.

no. efiezeoo. *patetica :een 1e, ieee.

To civ/ZZ whom t moycozecefn; involving departure from the scopethereof,

Be it .known that-I, CLEMENT Stirrn, e l 'citizen of the United Stetes,residing :it en :ninulei` buoyant vbody sind e disnictrico-l Topeka, inthe county oi bhewnee eind btnte bar d, connected' to und dependingthereof re-neas, have invented new sind useful linl from, end to providethe vnlvc C withl e stern proveniente in Corhureters, of which theiole., which is connected to und extends above' lowing is especicetion.i l the liest-bar d, shown, for e purpose which My invention pertains tocerburetors for will presently appear. internel-conibustion engines; endit .has for g D is the cover o? the gusolcne-rcservoir A, lo its chiefobject to provide e carburetor ceilcui and E is c' conduit, preferably,though not lated to present to e. passing volume oi' air e lnecessarily, U-shspcd, carried by the cover D Vsmell pond olf gnsolene,which 4hy uutoinnticand designed vto contain in its lower portion.

elly getting smaller es the velocity of the yol-y urne of cir passingthrough the curoureter in i 5 creeseswillch the witheun'" rniniigrl tureof vapor u il when the engine etteins l high speed the sur will toltethe direct spray oi I gesolene frein the duct through which the pond issuppiiedwitiigesolenc.

The foregoing; ond oil f edyentngeous features of niy invention 'w'ilihe fully under-- stood from foilowinr description end cieirns when thesaine reed in connection with the accompanying drawings, forming z5 portor" this specification, in which- Fieure l is a rerticil sectional viewoi the y-ceilmieter constituting the preferred ernbodirnent of myinvention. ltig. 'is it plain view oi' the celrhureter as o seineappears with sonic ot theperts renie1 i Fig. 3 is a.

ple-n view of the tioot which i. ploy in the @Selene-reservoir retor.

Simuler letters designate corresponding 35 ports in all oi the Views oithe orowings, rc

herring to which* iris the gesolene-reservoir of thc carburoter, whichis preferably ot circuler foi-in, es illustrated. This reservoir is'provided on 4o its bottom with o threaded pipe a, 'dosiffned to beconnected with e source of geso enesupply, and it is also rovidcd with econtreoted passage b, which communicates with end extends upward fromthe pipe o, as

4; shown. x

B is e floot arranged in the reservoir A and designed, in combinationwith evolve C, to maintain under norrnei conditions o certainAredeterrnined' quantity of esolene in the $0 pond, hereinafterdescribed in detail. Seid toets f3 end valve C may be of any construetion compatible with 'my invention without gnsolenc. This conduit E hasdepending y from its lowcrniost portion u duct f, which t receives undguides the upper portion or" the vulve-stein c and :ilse servos to telicgreso loue from the reservoir A et o point consideruhly below theno1-nini level of gnsolene, which is advantageous, because it ohviatesthe necessity of maintaining 'un accurate level of gzisoleno in thereservoir.l In its upper portion the conduit E is'provided with everticollydieposed threaded bore g, in which beers o screw i, throughthe medium of which conununicntion bet/Ween the duct jv und the interiorof the conduit may be regulated.

G is e pipeconnccted with the eduction end of the conduit E and designedto lood explosive initureto en internaLoombuslion engine. Between thispipe G and the said eduction end of conduit E is located e throttle ll.;hut as seid throttle maybe oi the ordinary s\'inging-slu1tter type wellknown in the nrt or of any other construction compotihle with myinvention I have dcenied it unnecessary to illustrate the saine indetail.

M is on nir-tubo connected to the induction end of the U-shop'cd conduitE. This oirltube M preferably strtight ondis pref'- erebly,`l though notnecessarily, connected to the conduit E by e, slip-joint, es shown, orby any other joint that will permit 0i the tube being adjusted withrespect to conduit E, es the distanceof the tube from the gasolene-jetis materiel to the action of the carburetor. In the oplei-ation of mynovel cfubureter the float B and Valve C will under normal conditionsmaintain the level of gesolcne .(indioeted byline X X) in the reservoirA end or elbow the hercinhcforc-reicrrcd-to pond of although i prefer tohave the float coniprisc IDO It will also be apparent that all necessaryadjustments may be made through the me# dium of the screw F, which byreason of its said pand it will be 'I until linallyaat the highest speedlocation 'Ls'.easy to get at. The' chief feature of my invention,however, is the pond of gasolene held in the lower portion or elbow ofthe U-shapedl conduit E, for in virtue of apparent' that when thethrottle is but partly open and there is a small rush of air in thedirection indicated vby arrows irl Fig. l, but a small portion' of.gasole'ne will be taken up 'and the area of the pond will remain at themaximum, so as to present a largesurface of gasolene to the slow-movingair for carburation. When the throttle 'is opened to a greater extentand the velocity of the volume of air is increased, the air will take upmotigasolene and the area of thev pond will be reduced of theinternal-combustionengme connected with the carbureter the air iscommingled with a direct spray from the mouth. of the duct f. In otherwords,"- the action of the pond of gasolene in the lower portion orelbow of the conduit E is to automatically compensate for changeLinspeed from low to high, and vice versa. Experience has demonstratechthat this mode of commingling the air and hydrocarbon fuel produces aremarkably uniform explosive mixture,I obviates the necessity ofemploying the usual spring tension u on the air-inlet, and hence allowsthe cylin ers of the engine to take a Jfull charge, thereby materiallyincreasing the pow'er of the engine.

In addition to the practical advantages hereinbefore pointed out mynovel carbureter is obviously simple and well adapted to withment ofparts may stand the usage to which carbureters are ordinarily subjected.

The constructionV herein shown and described constitutes the preferredembodiment of my invention, but I desire it understood that in practicevarious changes in the form, construction, and relative arran ebe madewithout invo ving departure the scope of my invention as claimedi WhileI prefer to enn loy a U-shaped airconduit, as stated, it wi l beunderstood that the VIcarburetear will operate to advantage with anyshape of conduit that will assure the air blowing down upon andimpingingagainst the pond ol. gasolene.' 'Again it will be noticed that theconstant level of the gaspy ene be' higherv than 'the bottorno pond. int e conduit the gasolene 'naturally runs in when the pond is absorbedincint valve disposed below said to high engine speed, or, in otherwords, when the pond of Gasolene has been consumed it 1s refurmshe'd,because of the level of the bottom. of the pond being below the level ofthe gasolenein the reservoir.

Having described my invention, what I claim, and desire to secure byLetters Patent, is-

1. A carbureter comprising a reservoir, means formaintaining a constant'level of gasolene in the reservoir, and a U`shaped conduit for airhaving its lower portion arrangedin the reservoinbelow 'said constantlevel oi gasolene, and having an aperture in its bottom lior'enablingthe gasolene to seek Y its level in the conduit.

2. A carbureter comprising a reservoir, means for maintaimng a constantlevel of gasolene in the reservoir, a tJ-shaped conduit i for air havingits 'lower portion arranged in the reservoir belowl said constant levelof gasolene, and having an aperture in its bottom for enabling thegasolene to seek its level in the conduit, and a screw extending throughthe upper portion of the conduit, and controlling and regulatingcommunication between said aperture and the ulterior of the conduit 3.'A carburetor comprising a reservoir having an inlet for gasolene in.its bottom, a valve disposed below said inlet and having anupwardly-extending stem, an annular float having a bar connected to saidvalvestem at an intermediate point in the length' of the 'latter andadapted in combination with the valve to maintain a constant level ofgasolene in the reservoir, and a Ueshaped conduit for air having itslower arranged -in the reservoir below the constant level of gasoleneand withinfthe annular float and having a duct depending from its bottomand receiving the upper portion of the valve stem.

4. A carbureter comprising a reservoir having an inlet torgasolene inits bottom, a inlet and having an upwardly-extending stem, an ani-tulsa`float having a' bar connected to said valvestem at an intermediate pointin the length of the latter .and .adapted in combination with the valveto maintain a constant level of gasolene in the reservoir, a U-shapedconi duit for' air having its lower portion arranged IOO in thereservoir below the constant level of I rrasolene and within thevanmllar' aloat and raving a duct depending from its'bottom andreceiving the upper, portion of Itlicse valvestem, anda screw extendingthrough the upperportion of the conduit, forA controllin and regulatingcommunication between said duct andthe interior of the conduit.

. 5. A carburetor comprising a reservoir, means for maintaining `aconstant level ot gasolene in the reservoir, a U-shaped conduit Intestimony whereof I have hereunto set for air having its lower portieriarranged in my hand in presence of two subscribing Wit- 1c the reservoi,felow said constantlevetl) of nesses. Y

gasolene, an aving an aperture in its' ottom for enabling the gasoleneto seek its CLEMENT 'SMITH level in the conduit, and an air-tubeadjustably connected with the induction end of the air-conduit.

Witnesses:A

J.' F. SWITZER- BENNETT A. WHEELER. l

